# [Gmsh] Problems with the transfinite Algo

**Christophe Geuzaine**
cgeuzaine at ulg.ac.be

*Sat Feb 27 16:06:20 CET 2010*

On 12/02/10 17:29, Henning.Scheufler at dlr.de wrote:
>* Hi everybody, <<TestCubeWorking.geo>> <<TestCubeNOTWorking.geo>>
*>*
*>* I have a problem creating a 3d-Mesh with the Transfinite Volume
*>* algorithms. To explain the Problem I made two Cubes. The only difference
*>* between the Cubes is that the two points have other numbers.
*>*
*>* (In CubeNOTWorking Point 7 and 8 are swapped.) Because of this i had to
*>* change all the arguments of the line command and in the transfinite
*>* surface command i had to change 2 points.
*>*
*>* As you can see, if you load the TestCubeNOTWorking.geo, you can’t create
*>* a 3d-mesh because the surfaces are incompatible. But the 2d Surface
*>* seems to be correct. I have really no idea why this isn’t working I
*>* checked it
*>*
*>* a million times and tried a lot of things.
*>*
*>* At the moment I want to create a sphere with gmsh. But I got the Problem
*>* with transfinite volume algorithms. The numbers of the Volume are
*>* written in red.
*
With recent versions you can simply omit the list of control points,
i.e. simply use
Transfinite Volume {1};
Does that solve your problem?
>*
*>* Volume 1 and 6 is working where as 2,3,4,5 isn’t working. if the
*>* transfinite Volume algorithms isn’t working, is it possible to solve it
*>* with the extrude command?
*>*
*>* Thanks
*>*
*>* Henning
*>*
*>*
*>*
*>* _______________________________________________
*>* gmsh mailing list
*>* gmsh at geuz.org
*>* http://www.geuz.org/mailman/listinfo/gmsh
*
--
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine